The OLFA mat is 1.5mm thick. It is equipped with a self-healing feature. This means that the mat surface automatically reseals itself after each cut, ensuring a consistently smooth and perfect cutting surface. It works effectively for cutting various materials such as fabric and paper. The size is great for large cutting surfaces and projects. This package contains one OLFA Double-Sided Self-Healing Rotary Mat, gray, 24x36 inches. Imported.